Quick connect coupling HI Cupla 30SH, steel - Nitto Kohki 319866048

On a factory air line the tool changes several times per shift, and the coupling has to release one-handed without venting the whole line. The Nitto Kohki HI Cupla works up to 1.5 MPa, and the shut-off valve inside the socket closes the supply the moment the connection is broken.

• Working pressure up to 1.5 MPa covers ordinary factory air, so a single range serves the whole shop line
• One-way shut-off valve built into the socket keeps the supply closed on disconnection, residual medium escapes at the plug
• Critical structural parts of the steel models are heat treated for higher strength and wear resistance
• NBR seal for -20 °C to +80 °C, FKM extends the range to +180 °C for hot media
• Body material follows the fluid: steel for air, brass and stainless steel also for water
• Sizes from 1/8 inch to 1 inch plus hose barbs for 1/4 inch to 1 inch hose

Technical data from the manufacturer catalogue

Dimensions

Dimensions in millimetres. Values in brackets apply in the connected condition.

Legend: L = overall length; D = socket outside diameter; A = hose barb length; T = thread or barb size; B = bore

Models in this series HI CUPLA

Every model of the series as printed in the manufacturer catalogue. The row of the article offered here is highlighted.

Operating principle

• An excellent general purpose coupling for connecting factory air supply to pneumatic tools.
• Steel coupling is suitable for air. Brass or stainless steel is suitable for water. Note that fluid will come out from the plug when disconnected.
• Critical structural parts of steel models are heat-treated for increased strength giving greater durability and resistance to wear.
• Available in various body materials, sizes and end configurations applicable to a wide range of applications.
• Built-in automatic shut-off valve in Socket.
• Steel, brass, or stainless steel body available.
• Various sizes and end configurations available.
• Interchangeable with HI CUPLA 200, NUT CUPLA, NUT CUPLA 200, LINE CUPLA, etc.

Series comparison

Choose HI CUPLA as the general purpose connection between factory air supply and pneumatic tools: at 1.5 MPa {15 kgf/cm2} for the steel and stainless steel bodies it sits in the same pressure class as HI CUPLA 200, FULL BLOW CUPLA, LINE CUPLA 200 and HI CUPLA ACE, while MICRO CUPLA, SMALL CUPLA, COMPACT CUPLA, CUBE CUPLA and SUPER CUPLA stay at 1.0 MPa {10 kgf/cm2}. It is one-way shut-off, so fluid must run from socket to plug; where both sides have to close, COMPACT CUPLA and CUBE CUPLA are the two-way shut-off options, and LEVER LOCK CUPLA is straight through with no valve. Its thread and hose barb sizes from 1/8 inch to 1 inch in steel, brass and stainless steel (SUS304) make it the choice when one coupling type has to serve air and, in brass or stainless steel, water.

Body and seal materials

Applications

• Connecting pneumatic tools to the factory air supply
• Automatic woodworking assemblers with frequent tool changes
• Water lines using brass or stainless steel bodies
• Hose connections through the hose barb end for 1/4 inch to 1 inch hose
• Permanent threaded connections at the device with R, Rc or G threads

Compatibility

Sockets and plugs of sizes 10, 17, 20, 30 and 40 connect with each other regardless of end configuration, and so do sizes 400, 600 and 800, but the two groups cannot be connected across. The series is also interchangeable with Hi Cupla 200, Nut Cupla, Nut Cupla 200 and Line Cupla, and it is not intended for vacuum in either the connected or the disconnected state.

Standards and compliance

End connections use R, Rc and G threads, sealing materials are nitrile rubber (NBR, marked SG) and fluoro rubber (FKM, marked X-100).

Safety and application notes

• Fluid must run from socket to plug.
• Note that fluid will come out from the plug when disconnected.
• Not suitable for vacuum application in either connected or disconnected condition.
• Above specifications apply only to CUPLA. Maximum working pressure and working temperature range may vary depending on tube materials you use with and the working temperature.
• When connecting an extremely soft tube such as soft polyurethane or soft nylon, attach the insert ring specified by the tube manufacturer to the inner diameter of the tube to be connected.
• The operable temperature range depends on the operating conditions.

All technical data on this page is taken from the Nitto Kohki general catalogue Quick Connect Couplings C01en-b, page 39. The complete catalogue is available for download on this page.